Parliaments are ‘new-comers’ in the better regulation discourse. Regulatory impact assessments and ex post evaluations are conceived for being implemented by governments. Nonetheless, from the viewpoint of input and output legitimacy, legislatures are essential players. The paper considers how parliaments face the better regulation challenge, focusing on the organisation and procedures. Three set of questions are addressed. The first and second questions consider, respectively, the kind of tools used by parliaments to contribute to better regulation purposes and the related outcomes. The third question dwells on the function connecting parliaments to better regulation, particularly on whether this is an extension of the legislative function or rather a manifestation of the scrutiny/oversight function. An appropriate reconsideration of procedural rules to structurally incorporate better regulation techniques would therefore be desirable in view of fostering ‘confidence’ in legislation.